<template>
   <div class="wrapper" ref="wrapper">
     <div class="content">
       <slot></slot>
     </div>
   </div>
</template>

<script>
import BScroll from 'better-scroll'
export default {
  name:'Scroll',
  props:{
    probeType:{
      type:Number,
      default:0
    },
    pullUpLoad: {
		    type: Boolean,
        default: false
      }
  },
   data () {
      return {
        scroll:null
      };
   },
   
   mounted() {
     //1.创建BScroll对象
     this.scroll = new BScroll(this.$refs.wrapper,{
       click:true,
       probeType:this.probeType,
       pullUpLoad:this.pullUpLoad
     })
     //2.监听滚动的位置
     if (this.probeType === 2 || this.probeType === 3){
        this.scroll.on('scroll',(position) => {
        this.$emit('scroll',position)
       })
     }
     
     //3.监听上拉事件
     if (this.pullUpLoad){
        this.scroll.on('pullingUp', () => {
          this.$emit('pullingUp')
        })
     }
   },
   components: {},

   computed: {},

   methods: {
     scrollTo(x,y,time=300){
       this.scroll && this.scroll.scrollTo && this.scroll.scrollTo(x, y, time)
     },
     finishPullUp(){
        this.scroll && this.scroll.finishPullUp && this.scroll.finishPullUp()
     },
     refresh(){
      this.scroll && this.scroll.refresh && this.scroll.refresh()
     },
     getScrollY() {
       return this.scroll ? this.scroll.y : 0
     }

   }
}
</script>
<style lang='less' scoped>

</style>